Outboard motor for small craft



Oct. 13, 1925. 1,557,253

L. J. JOHNSON OUTBOARD MOTOR FOR SMALL CRAFT Filed Jan. 5. 1924 2Sheets-Sheet 1 e o o f ff /4 o Q j; /0 /6 a /7 INVENTOR.

A TT ORNE Y.

Oct. 13 1925'- L. J. JOHNSON OUTBOARD MOTOR FOR SMALL CRAFT Film! Jan.1924 2 Sheets-Sheet 2 l I irmr anullirile &

INVENTOR'. 060a J zzsozz- ATTORNEY.

Patented (let. I 13, 1925;

UNITED S'TFATES PATENT OFFICE.

LOUIS J. JOHNSON, or rsHAwAKA, I DIANA, nssrenon. T JOHNSONBROS. ENUJ- iNEERING conronarroiv, or s'oUrH BEND, INDIANA.

. OUTBOARD MOTOR Fort SMALL CRAFT.-

Application filed January 5,1924. ,Serial No. 684,563.

To all whom it may concern.

Be it known that I, LOUIS J. JOHNSON, a citizen of the United States,residing. at Mishawaka, in the county of St. Joseph and a State ofIndiana, have inventedcertain new and useful Improvements in OutboardMotors for Small Craft, of-which the following is a specification.

The invention relates to outboard motors for small craft, and has forits object to pro- 'vide in combination with a pivotally mounted motorhaving a depending tubular casing, which casing is rotatably mounted ina supporting sleeve at its upper end, and provided with a sleeveintermediateits ends having interlocking means cooperating with astationary member, means whereby water from a pumpadjacent the lower endof the tubular casing will be conducted through a pipe, which pipeextends through sleeves between their inner and outer peripheries wherethe pipe will not interfere with the rotation of the motor and tubularcasing.

A further object is to provide a discharge pipe from the waterjacket ofthe motor,

which pipe extends downwardly through the upper supportingv sleeve ofthe tubular casing.

A further object is to provide 1n combma- =tion with a pivotally mountedand vertically movableoutboardmotor, said anotor being I supported on asleeve adjacentits upper end carried by the drive shaft casing, andprovided with a sleeveintermediate its ends rotatably-mounted betweenslotted arms having a member cooperating with interlocking means carriedby the sleeve, a water supplypipe for the water jacket of the motor,"

which supply pipe is disposed outsideof the 4 tubular drive shaftsleeve,thereby allow ing a maximum diameter of drive-shaft and L toextend thewater supply pipe through the v sleeves carried by the tubular driveshaft I sleeve, in a manner whereby they will not interfere with therotation of the motor and tubular drive shaft sleeve carried thereby.

With theabove and other objects in. view I the invention resides in thecombination and arrangement 'of parts as heremafter set may be madewithin the scope of what is claimed without departing from thespirit of'the invention.

In the drawing:-

Figure 1 is a .sideeleva'tion of an out board motor, showing thewatersupply pipe and-discharge pipe applied thereto.

Figure 2 is a vertical longitudinal sectional View through themotor anddrive shaft tubular casing and -the supporting, means for the motor. I

Figure 3 is a horizontal sectional view taken on line 3+3 of Figure 2.

-Figure 4 is a modified form .of sleeve showing a horizontal sectionthereupper Figure -5 is a horizontal sectional view taken on line 5- ofFigure 51. i L

' Referring to the drawing, the-numeral 1' designates the water jacketofthe motor, 2 a water supply pipe connected to said acket and 3 a waterdischarge pipe connected to said jacket, through which pipes waterpasses to and from the water jacket of the motor for cooling purposes.The casing 1 is supported on a vertically disposed rotatable sleevel,Wl1'iCl1 sleeve is brazed or otherwise secured to the upper end 5 ofthe. tubular drive'shaft casing 6, consequently .rotates with the casing6 during the directional steering ofthe boat by the rotation in ahorizontal plane of the motor. Sleeve 4 is rotatably mounted in a splitsleeve '7, Which last named sleeve ispivotally connected at 8 to abracket 9, which is'secured -to a boat 10,therefor'e it will be seenthat V the motor as a whole is pivotally movable in a horizontal plane,as well as pivotally movable in a'vertical longitudinal plane for casing6v and-iis provided with segmentally shaped flanges 1.4;, which flangesupon a rotation of the motor, when the casing 6 is in avertical'position, overlie the flanges'l5 of a segmentally shaped plate16, which. is ad'- tally shaped arms 17, which prevent the motor frompivotal movement in a vertical plane upon reversal of the motor as awhole, for instance when backing.

It will be seen that if the water supply pipe 18, which leads from thepump 19,

,adjacent the lower end of the casing 6, is disposed outside of thesleeve '12 and the steering purposes, or for raising the propeljustablymounted between slotted segmenthe sleeves 1 and 12.

sleeve 4, it will interfere with the rotation of the motor by engagementwith the supporting means for the sleeve 7, and the seginentally shapedplates or guide arms 17. On the other hand if the pipeis disposed withinthe tubular casing 6, said casing would necessarily have to be ofconsiderable diameter or the drive shaft. disposed therein relativelysmall diameter. To obviate the above difficulties the pipe 18 extendsthrough the sleeves 12 and 4 intermediate their inner and outerperipheries, preferably through vertically disposed apertures 20' wherethe pipe will not interfere with the rotation of the motor by thesupporting members for Although apertures 20. have been described, it isobvious that vertically disposed channels 20 may be used as shown inFigure l, if desired, however in either case the pipe 18 is disposedbetween the inner and outer peripheries of the sleeves 4 and 12. Supplypipe 2 is connected at 21 to the upper end of the sleeve 4 where it willreceive its supply of water from the pipe 18.

'The discharge pipe 3, which leads from the water jacket of the engineis connected 'at 22 to the upper. end of the sleeve 1 and dischargesinto a pipe 23, which extends through an aperture 24 in, the rear sideof the sleeve 4:, said pipe 23' preferably e1;- tends downwardly fromthe lower end' of the sleeve l where its discharge end 25 will bedisposed below the water level, but in position where it will notinterfere with the rotation of the motor and its casingfi.

From the above it will be seen that a water supply and discharge pipe isprovided for water jackets of out-board motors,

which motors are pivotally mounted in 'supporting sleeves, and the pipesdisposed in a position where they will not interfere with the freerotation of the motor in its supporting bearing. It willalso be seenvthat the pipes will not only allow fre'e rotation of the" motor, but atthesaine time will also allow the tubular casing to be of a' niiiiimumdiameter and a maximum diameter of driveshaft'to be used within the eas-1ng,6.'

is claimed as new and useful is 1. The combination Wlilhilll outboardmotor having a tubular drive shaft casing, a

locking sleeve carried by the outer side of said drive shaft casing,said sleeve being rotatably mounted in a segmentally shaped plate, awater jacket carried by the motor, a pump rotatable with the shaftcasing and disposedbeneath the sleeve, of a pipe con- The inventionhaving been set forth what nection between the water jacket and thepump, said pipe connection extending through the sleevebetweenthe innerand" 3. T he combination with an outboard mo-.

tor, a drive shaft casing carried by said motor, a sleeve adjacent theupper-end of said casing, said sleeve being rotatably mounted inasupporting bracket, a second sleeve'intermediate the ends of the casingand rotatabletherewith, fixed interlocking means for said last namedsecond sleeve, a pump carried by said casing, a water jacket carried bythe motor, of a pipe connection betwenthe pump and the water jacket,said pipe connection, extending through the sleeves carried by thecasing.

4. The. combination with an outboard'mo- ,tor, a drive shaft casingcarried by said mot'or,.a sleeve ad acent the upper end. of

the casing, said sleeve being rotatably mounted in a supporting bracket,a second sleeve intermediate the ends of the casing ried by the motor,"of a pipe connection between the pump and the water jacket, said pipeconnection extending through the sleeves-carried by the casing, adischarge pipe connected to thewaterjacke't, said discharge pipeextending downwardly through the upper sleeve.'

androtatable therewith, fixed interlocking means for sa d last named'sleeve,,a pump .carried by said casing,-a water acket'car- 5. Thecombination with an outboard mo-v tor, a drive shaft casing carried bysaid motor, a sleeve carried by said casing and rotatable therewith, asecond sleeve in which said first mentioned sleeve is rotatably mounted,a motor carried-by said casing and having a water jacket,- a Waterintake pipe carried by said motor, a water discharge pipe carried bysaid motor said pipes extending through said first mentioned sleeveoutside the casing. I

' In testimony whereof I afiix my signature.

LOUIS J. JOHNSON. M

